Im not chase numbers anymore, i just need a sub that can take some abuse a daily ground pounder. Plan is 2 18s in Escalade Ext. That is being built as a show car but can still crush in the lanes if need be.

Trying to figure out what brand/sub to go with the Fi SP4 or the SSA Zcon.? just want some peoples input and opinion or thoughts on the two. I what to do something different these go round on my new build. ( Have done AQ, Sundown, Solo X, and some others.)